[mod_python] remnant 'orphan' apache subprocesses

> Hmmm, there should have been 39 other stack traces, one for each
> worker thread based on your Apache configuration.
>

That puzzled me too. I could not get other threads from gdb...

> -----Original Message-----
> From: Graham Dumpleton [mailto:graham.dumpleton at gmail.com]
> Sent: Tuesday, January 22, 2008 7:00 PM
> To: Alec Matusis
> Cc: mod_python at modpython.org
> Subject: Re: [mod_python] remnant 'orphan' apache subprocesses
> 
> On 23/01/2008, Alec Matusis <matusis at yahoo.com> wrote:
> > > (gdb) thread apply all bt
> >
> > Thread 1 (Thread 1111562592 (LWP 3812)):
> > #0  0x00002aaaab2c94df in sem_wait () from /lib64/tls/libpthread.so.0
> > #1  0x00002aaaac204dcd in PyThread_acquire_lock (lock=0x5b7820,
> waitflag=1)
> 
> Hmmm, there should have been 39 other stack traces, one for each
> worker thread based on your Apache configuration.
> 
> Don't necessarily post them all, but you should look and see what is
> in frame #0 for all of them and see if there is anything odd such as
> one blocking in a call out to some external C library. If no such
> thing and they are all stuck on Python mutex locks, then must be
> internal deadlock.
> 
> This still doesn't explain though how the process has been associated
> with PPID of 1, which would  still only seem possible if something had
> tried to daemonise process.
> 
> Graham
> 
> Graham